Figure 1 shows the trend over twenty-nine years, from 1978 to 2007, in the prevalence of adult obesity in Canada, based on available years of data. Years when self-reported data are available are: 1985 (6.2%); 1990 (9.7%); 1994 (13.1%); 1996 (12.5%); 1998 (14.5%); 2000 (14.8%); 2003 (15.2%); 2004 (15.5%); 2005 (15.9%); 2007 (16.9%). Years when measured data are available are: 1978 (13.8%); 1989 (14.8%); 2004 (23.1%); 2005 (24.2%). A horizontal line depicts the estimated trend in the prevalence of adult obesity in Canada based on measured data.